On Thursday, Moscow banned most food imports from Western nations in response to heightened economic sanctions. The deal isolates Russians from global trade to a level that hasn't been seen since the end of the Cold War, with specific imports from the United States, Australia, Canada, the European Union, and Norway banned.

Here are the top stories in stock market news today:

Drug Problem: Shares of pharmaceutical giant Pfizer Inc. (NYSE: PFE) are on the decline in pre-market hours on news that the company is confronting a wave of lawsuits from women over possible side effects from its anti-cholesterol drug Lipitor. The news comes on the same day that the company settled a $35 million claim on accusations that one of its subsidiaries unlawfully promoted its kidney rejection prevention drug, Rapamune.

Stretching for Profits: Shares of Lululemon Athletica Inc. (Nasdaq: LULU) saw a 6% gain in post-hours trading on news that the company's founder, Dennis "Chip" Wilson, will sell half of his 27% stake to private equity firm Advent International for $845 million. The announcement ends a possible proxy fight over two board members after his own board forced him to resign in December 2013. The deal will provide Advent with two board members and lead to a shakeup atop the company's leadership.

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